commit 36c7bfc4d0f046887d6d73eba430ac6551383849
author Anton Blanchard <anton@samba.org> Tue Jan 20 10:24:22 2015 +1100
committer Michael Ellerman <mpe@ellerman.id.au> Wed Jan 21 15:10:24 2015 +1100
tree c41c5d0cf38251d4b0f81acbe2385a84736921ab
parent afda939f0ae63723250734e1365e4ead97f8a2b1

powerpc: Enable KSM on pseries and ppc64 defconfigs

KSM will only be used on areas marked for merging via madvise, and it
is showing nice improvements on KVM workloads, so enable it by
default.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/configs/pseries_defconfig

diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index ffd4bbd..7677850 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -46,6 +46,7 @@
 CONFIG_IRQ_ALL_CPUS=y
 CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
+CONFIG_KSM=y
 CONFIG_TRANSPARENT_HUGEPAGE=y
 CONFIG_PPC_64K_PAGES=y
 CONFIG_PPC_SUBPAGE_PROT=y